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1. 发明授权

US3892936A Process for electrical discharge shaping and apparatus therefor utilizing different shape wave forms 失效
标题翻译：电气放电形成工艺及其利用不同形状波形的装置
公开(公告)号：US3892936A
公开(公告)日：1975-07-01
申请号：US44054674
申请日：1974-02-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOBAYASHI KAZUHIKO , OIZUMI TOSHIRO
IPC分类号： B23H1/02 , B23P1/08
CPC分类号： B23H1/022
摘要： A process and apparatus for electrical discharge shaping of a workpiece by intermittently applying a pulse voltage across a working gap between the workpiece and an electrode, wherein the waveform of the discharge pulse current is changed from a rectangular form to another form having a slant line, such as a triangular form, depending upon the time interval from the application of the pulse voltage to initiation of the discharge such that consumption of the electrode is minimized.
摘要翻译：一种用于通过在工件和电极之间的工作间隙间歇地施加脉冲电压来对工件进行放电成形的工艺和装置，其中放电脉冲电流的波形从矩形形式改变为具有倾斜线的另一形式，这取决于从施加脉冲电压到开始放电的时间间隔，使得电极的消耗最小化。

2. 发明授权

US3670136A Electric discharge machining method and apparatus 失效
标题翻译：电动放料加工方法及装置
公开(公告)号：US3670136A
公开(公告)日：1972-06-13
申请号：US3670136D
申请日：1970-02-02
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KOBAYASHI KAZUHIKO
IPC分类号： B23H1/02 , B23H7/18 , B23P1/08
CPC分类号： B23H7/18
摘要： Upon electric-discharge machining a workpiece by intermittently applying pulse voltages across a gap between it and the opposed electrode, a pause time following each pulse voltage is adjusted by predetermined small incremental amounts in accordance with the voltage conditions developed across the gap.
摘要翻译：通过在其与相对电极之间的间隙上间歇地施加脉冲电压来对工件进行放电加工，根据跨越间隙产生的电压条件，在每个脉冲电压之后的暂停时间被调整预定的小增量。

3. 发明授权

US3884790A Apparatus for electrolytically etching 失效
标题翻译：电解蚀刻装置
公开(公告)号：US3884790A
公开(公告)日：1975-05-20
申请号：US37496073
申请日：1973-06-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOBAYASHI KAZUHIKO , TAKAWASHI TAMIO , ARAI SHINJI
IPC分类号： B23H3/02 , B23P1/02 , B01K3/00
CPC分类号： B23H3/02
摘要： An apparatus for electrolytically etching a workpiece comprises means for interrupting a power source quickly when an abnormal phenomenon occurs, and means for accurately detecting an abnormal current attenuation occuring between an electrode and a workpiece. In the apparatus for electrolytically etching a workpiece, a saturable reactor constant voltage automatic controlling system is employed for the electrolytic etching power source, and in order to decrease the size of an interrupting thyristor and to complete the interrupting of the working current; an interrupting diode is inserted between the saturable reactor, a stepdown transformer and a three phase full wave rectification, and the interrupting thyristor is connected to the output and is turned on by an abnormal phenomenon detecting signal so that the feed to the workpiece and the electrode is stopped by a short circuit of the three phase alternating current between the saturable reactor and the stepdown transformer. The abnormal phenomenon occuring between the electrode and the workpiece in the electrolytic etching, is detected by employing a sample and hold circuit, an operational amplifier and a logic circuit to prevent damage to the electrode and the workpiece. Further, an apparatus for electrolytically etching a workpiece wherein an abnormal current attenuation is detected with high accuracy is provided so that the ripple component of the working power source due to a spark or voltage change component caused by electrical noise and spark, is detected with high accuracy.

4. 发明授权

US3705287A Process for shaping workpiece by electrical discharge and apparatus therefor 失效
标题翻译：通过放电及其设备形成工件的方法
公开(公告)号：US3705287A
公开(公告)日：1972-12-05
申请号：US3705287D
申请日：1971-04-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KOBAYASHI KAZUHIKO , TAKAGI SHIGERU
IPC分类号： B23H1/02 , B23P1/08
CPC分类号： B23H1/02
摘要： A process for shaping a workpiece using an electrical discharge and an apparatus for practicing the process is disclosed. According to the process, a workpiece is shaped by intermittently impressing a voltage pulse across a working gap between the workpiece and an appropriately shaped electrode. The process includes the step of controlling the duration of the electrical discharge in the working gap in accordance with operating conditions in the working gap to control the average current flow. The apparatus includes a control circuit having a capacitor circuit which controls the duration of the current discharge depending directly upon the time during which the no-load voltage exists in the working gap.
摘要翻译：公开了一种使用放电来成形工件的工艺和用于实施该工艺的设备。根据该过程，通过在工件和适当形状的电极之间的工作间隙间歇地施加电压脉冲来成形工件。该过程包括根据工作间隙中的操作条件控制工作间隙中的放电持续时间以控制平均电流的步骤。该装置包括具有电容器电路的控制电路，该电容器电路根据工作间隙内存在空载电压的时间直接控制电流放电的持续时间。

5. 发明授权

US3655936A Apparatus for electroerosively etching a workpiece 失效
标题翻译：电子蚀刻工具的设备
公开(公告)号：US3655936A
公开(公告)日：1972-04-11
申请号：US3655936D
申请日：1971-01-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KOBAYASHI KAZUHIKO , NIWA SUSUMU
IPC分类号： B23H1/02 , B23P1/08
CPC分类号： B23H1/022
摘要： A circuit for an electroerosive etching apparatus is disclosed which includes first and second direct current sources controlled by first and second switching circuits, respectively. The first switching circuit includes a plurality of switching elements, all of which are connected in parallel to facilitate the delivery of large currents and a pulse source for controlling the switching elements. The second switching circuit may include only one switching element, and is designed to supply only small currents. In operation, the first and second switching circuits initially cooperate to apply a potential nearly equal to the combined potentials of the two direct current sources across a working gap. Once a discharge is achieved using this high potential, the second switching circuit is automatically cut off, leaving the first switching circuit operative to supply the large current needed in the etching operation. A protective circuit is also included to prevent damage of the first switching circuit due to overloading.
摘要翻译：公开了一种用于电腐蚀蚀刻装置的电路，其包括分别由第一和第二开关电路控制的第一和第二直流电源。第一开关电路包括多个开关元件，所有这些开关元件都并联连接以便于输送大电流和用于控制开关元件的脉冲源。第二开关电路可以仅包括一个开关元件，并且被设计为仅供应小电流。在操作中，第一和第二开关电路最初协作以施加几乎等于两个直流电源跨工作间隙的组合电位的电位。一旦使用该高电位实现放电，则第二开关电路自动切断，使第一开关电路可操作地提供蚀刻操作所需的大电流。还包括一个保护电路，以防止第一个开关电路由于过载而损坏。

6. 发明授权

US3597570A Device for detecting sustained arcing across electrospark machining gaps 失效
标题翻译：用于通过电动机加工检测检测持续的电弧的装置
公开(公告)号：US3597570A
公开(公告)日：1971-08-03
申请号：US3597570D
申请日：1969-05-22
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KOBAYASHI KAZUHIKO , NIWA SUSUMU
IPC分类号： B23H1/02 , B23P1/08
CPC分类号： B23H1/024
摘要： Each time a voltage across the machining gap due to each of applied pulses exceeds a predetermined above-arc magnitude, a timing capacitor is fully discharged by a shorting transistor triggered by a gap-coupled Zener diode. When the voltage is below the predetermined magnitude for a predetermined number of pulses, the capacitor is progressively charged until the voltage across the capacitor exceeds a predetermined magnitude and actuates an instrument for indicating that abnormal discharges are being effected across the gap.

7. 发明专利

DE3023436A1 未知
公开(公告)号：DE3023436A1
公开(公告)日：1981-01-15
申请号：DE3023436
申请日：1980-06-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： NANASAWA YOSHIFUMI , KOBAYASHI KAZUHIKO
IPC分类号： B23H7/06 , B23P1/14
摘要： A method of cutting a workpiece in a desired configuration by using an electric discharge andrelatively moving the workpiece and a wire electrode. When cutting a waste work part of the configuration, the wire electrode is stopped and shifted backwardly for a predetermined distance. The wire electrode is then shifted perpendicular to the work direction until it contacts the wall of the workpiece so as to measure the discharge gap.

8. 发明专利

DE2362251A1 未知
公开(公告)号：DE2362251A1
公开(公告)日：1974-06-20
申请号：DE2362251
申请日：1973-12-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KOBAYASHI KAZUHIKO , OIZUMI TOSHIRO
IPC分类号： B23H1/02 , B23P1/04
摘要： A method and apparatus for shaping a workpiece by electrical discharge, the workpiece being shaped by a shaping electrode by intermittently impressing a voltage pulse across a working gap formed between the workpiece and the shaping electrode. The apparatus comprises a means for efficiently controlling the duration of a discharge across the working gap according to a condition dependent upon a no-load voltage impressing period, i.e., the period of operation beginning with the impression of the voltage pulse and ending with the occurrence of a discharge, and further according to the state of the working gap detected in terms of a processing voltage mean value. When a no-load voltage impressing period is inside a given interval, the duration of a discharge is increased according to the length of the period. Alternatively, when the no-load voltage impressing period is outside the given interval, the duration of a discharge corresponding to the state of the working gap is not increased. Accordingly, operating stability is improved and electrode consumption is minimized.

9. 发明专利

DE2333840A1 未知
公开(公告)号：DE2333840A1
公开(公告)日：1974-01-10
申请号：DE2333840
申请日：1973-07-03
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKAWASHI TAMIO , ARAI SHINJI , KOBAYASHI KAZUHIKO
IPC分类号： B23H3/02 , B23P1/04

10. 发明专利

BE799819A 未知
公开(公告)号：BE799819A
公开(公告)日：1973-11-21
申请号：BE131346
申请日：1973-05-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KOBAYASHI KAZUHIKO , KAKAGI SHIGERU
IPC分类号： B23H1/02 , B23P

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